Analysis
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max time kernel
148s -
max time network
147s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
06-11-2020 10:45
Static task
static1
Behavioral task
behavioral1
Sample
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe
Resource
win10v20201028
General
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Target
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe
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Size
455KB
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MD5
77f6eb1421150e7d442a52023db4f754
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SHA1
65fed9203ae5e688527350b9517a8e57fc1c8b25
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SHA256
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff
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SHA512
385d4ab6c3d2ca058c026f315b80c9b0699337878fb547b3716a9db747224a3876da64124dadad207e776a96e3d30b5835e2dbd7124406a1db8757a95e8da3bd
Malware Config
Extracted
oski
45.12.215.204
Signatures
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Oski
Oski is an infostealer targeting browser data, crypto wallets.
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Downloads MZ/PE file
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Loads dropped DLL 3 IoCs
Processes:
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exepid process 1048 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe 1048 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe 1048 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
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Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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Suspicious use of SetThreadContext 1 IoCs
Processes:
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exedescription pid process target process PID 1304 set thread context of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Checks processor information in registry 2 TTPs 1 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe -
Kills process with taskkill 1 IoCs
Processes:
taskkill.exepid process 992 taskkill.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exetaskkill.exedescription pid process Token: SeDebugPrivilege 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe Token: SeDebugPrivilege 992 taskkill.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exebed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.execmd.exedescription pid process target process PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1304 wrote to memory of 1048 1304 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe PID 1048 wrote to memory of 4028 1048 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe cmd.exe PID 1048 wrote to memory of 4028 1048 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe cmd.exe PID 1048 wrote to memory of 4028 1048 bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe cmd.exe PID 4028 wrote to memory of 992 4028 cmd.exe taskkill.exe PID 4028 wrote to memory of 992 4028 cmd.exe taskkill.exe PID 4028 wrote to memory of 992 4028 cmd.exe taskkill.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe"C:\Users\Admin\AppData\Local\Temp\bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe"C:\Users\Admin\AppData\Local\Temp\bed5b9eae040bc5c251d0b025761373131dc12754660e6be4aa5b1c1d302f4ff.exe"2⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c taskkill /pid 1048 & erase C:\Users\Admin\AppData\Local\Temp\bed5b9eae040bc5c251d0b025761373131dc12754660e6' & RD /S /Q C:\\ProgramData\\059316001172373\\* & exit3⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\taskkill.exetaskkill /pid 10484⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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\ProgramData\mozglue.dllMD5
8f73c08a9660691143661bf7332c3c27
SHA137fa65dd737c50fda710fdbde89e51374d0c204a
SHA2563fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd
SHA5120042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89
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\ProgramData\nss3.dllMD5
bfac4e3c5908856ba17d41edcd455a51
SHA18eec7e888767aa9e4cca8ff246eb2aacb9170428
SHA256e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78
SHA5122565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66
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\ProgramData\sqlite3.dllMD5
e477a96c8f2b18d6b5c27bde49c990bf
SHA1e980c9bf41330d1e5bd04556db4646a0210f7409
SHA25616574f51785b0e2fc29c2c61477eb47bb39f714829999511dc8952b43ab17660
SHA512335a86268e7c0e568b1c30981ec644e6cd332e66f96d2551b58a82515316693c1859d87b4f4b7310cf1ac386cee671580fdd999c3bcb23acf2c2282c01c8798c
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memory/992-18-0x0000000000000000-mapping.dmp
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memory/1048-7-0x000000000040717B-mapping.dmp
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memory/1048-6-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1048-8-0x0000000000400000-0x0000000000438000-memory.dmpFilesize
224KB
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memory/1304-0-0x0000000073C50000-0x000000007433E000-memory.dmpFilesize
6.9MB
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memory/1304-5-0x00000000015A0000-0x00000000015AD000-memory.dmpFilesize
52KB
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memory/1304-4-0x0000000001700000-0x0000000001723000-memory.dmpFilesize
140KB
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memory/1304-3-0x0000000008660000-0x0000000008661000-memory.dmpFilesize
4KB
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memory/1304-1-0x0000000000D80000-0x0000000000D81000-memory.dmpFilesize
4KB
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memory/4028-17-0x0000000000000000-mapping.dmp